export default {
	namespaced: true,
	state: () => ({
		//约定每个数据包涵6个属性{goods_id,goods_name,goods_price,goods_count,goods_small_logo,goods_state}
		cart: JSON.parse(uni.getStorageSync('cart') || '[]')
	}),
	mutations: {
		addToCart(state, goods) {
			const findResult = state.cart.find((x) => x.goods_id === goods.goods_id)
			if (!findResult) {
				state.cart.push(goods)
			} else {
				findResult.goods_count++
			}
			this.commit('m_cart/saveToStorage')
		},
		saveToStorage(state) {
			uni.setStorageSync('cart', JSON.stringify(state.cart))
		},
		updateGoodsState(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			if (findResult) {
				findResult.goods_state = goods.goods_state
				this.commit('m_cart/saveToStorage')
			}
		},
		updateGoodsCount(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			if (findResult) {
				findResult.goods_count = goods.goods_count
				this.commit('m_cart/saveToStorage')
			}
		},
		removeGoods(state, goods) {
			state.cart = state.cart.filter(x => x.goods_id !== goods.goods_id)
			this.commit('m_cart/saveToStorage')
		},
		changeTotalState(state, isFullCheck) {
			state.cart.forEach(x => x.goods_state = !isFullCheck)
			this.commit('m_cart/saveToStorage')
		},
		updateCart(state){
			state.cart = state.cart.filter(x=>!x.goods_state)
		}
	},
	getters: {
		total(state) {
			return state.cart.reduce((total, item) => total += item.goods_count, 0)
		},
		checkedCount(state) {
			return state.cart.filter(x => x.goods_state).reduce((total, item) => total += item.goods_count, 0)
		},
		checkedTotalAmount(state) {
			return state.cart.filter(x => x.goods_state).reduce((totalAmount, item) => totalAmount += item.goods_price *
				item.goods_count, 0)
		}
	}
}
